590
CDUS43 KLOT 100636
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
136 AM CDT WED SEP 10 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 9 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 76 1:58 PM 95 1955 78 -2 81
1959
1983
MINIMUM 53 6:17 AM 43 1986 60 -7 57
AVERAGE 65 69 -4 69
PRECIPITATION (IN)
YESTERDAY 0.00 3.44 1875 0.10 -0.10 0.00
MONTH TO DATE 0.01 1.02 -1.01 0.04
SINCE SEP 1 0.01 1.02 -1.01 0.04
SINCE JAN 1 22.46 27.73 -5.27 26.90
SNOWFALL (IN)
YESTERDAY 0.0 0.0 MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE SEP 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 1 -1 0
MONTH TO DATE 32 6 26 14
SINCE SEP 1 32 6 26 14
SINCE JUL 1 37 12 25 14
COOLING
YESTERDAY 0 5 -5 4
MONTH TO DATE 8 53 -45 29
SINCE SEP 1 8 53 -45 29
SINCE JAN 1 1000 925 75 1015
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (160)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION S (160)
AVERAGE WIND SPEED 5.6
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 66 4:00 AM
LOWEST 30 1:00 PM
AVERAGE 48
......................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 95 1983
2013
MINIMUM TEMPERATURE (F) 59 44 1943
SUNRISE AND SUNSET
SEPTEMBER 10 2025.....SUNRISE 6:27 AM CDT SUNSET 7:09 PM CDT
SEPTEMBER 11 2025.....SUNRISE 6:28 AM CDT SUNSET 7:07 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page